Summary statistics for parkwork dataset : by Jean Roth , jroth@nber.org , 22 Oct 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 1,091 27.3428 16.50976 1 56 st_case | 1,091 274211.3 165032.9 10002 560097 veh_no | 1,091 2.673694 1.145328 1 10 pve_forms | 1,091 1.27681 .6165927 1 7 pnumoccs | 1,091 .2163153 .60042 0 5 -------------+--------------------------------------------------------- pday | 1,091 16.58753 8.81733 1 31 pmonth | 1,091 6.779102 3.508282 1 12 phour | 1,091 11.30247 8.14908 0 99 pminute | 1,091 28.37305 17.64781 0 99 pharm_ev | 1,091 19.13107 13.10299 1 59 -------------+--------------------------------------------------------- pman_coll | 1,091 1.130156 6.258463 0 99 ptype | 1,091 2.465628 .5580611 2 4 phit_run | 1,091 0 0 0 0 preg_stat | 1,091 30.42163 22.03067 0 99 powner | 1,091 5.906508 .567033 0 6 -------------+--------------------------------------------------------- pmake | 1,091 34.2209 26.24059 2 99 pmodel | 1,091 363.1567 316.3761 1 999 pmak_mod | 1,091 34584.05 26372.21 2403 99999 pbodytyp | 1,091 23.62786 23.55585 1 99 pmodyear | 1,091 2178.143 1173.495 1960 9999 -------------+--------------------------------------------------------- pvin | 0 pvin_1 | 0 pvin_2 | 0 pvin_3 | 0 pvin_4 | 0 -------------+--------------------------------------------------------- pvin_5 | 0 pvin_6 | 0 pvin_7 | 0 pvin_8 | 0 pvin_9 | 0 -------------+--------------------------------------------------------- pvin_10 | 0 pvin_11 | 0 pvin_12 | 0 pvintype | 0 pvinmake | 0 -------------+--------------------------------------------------------- pvina_mod | 0 pvin_bt | 0 pvinmodyr | 1,053 32.31529 41.10093 0 99 pvin_lngt | 1,053 16.93447 .7194201 6 17 pvin_wgt | 571 3346.335 887.6289 0 7190 -------------+--------------------------------------------------------- pwgtcd_tr | 455 3.450549 2.67664 1 8 pwhlbs_lg | 1,026 309.9025 749.2139 0 9600 pwhlbs_sh | 1,026 1045.726 394.2852 0 2045 pser_tr | 0 pfuecode | 0 -------------+--------------------------------------------------------- pmcycl_ds | 6 1390.167 346.1228 805 1800 pcarbur | 0 pcylinder | 0 pdisplace | 0 pmcycl_cy | 0 -------------+--------------------------------------------------------- pmcycl_wt | 0 ptire_sze | 0 pton_rat | 0 ptrk_wt | 0 ptrkwtvar | 0 -------------+--------------------------------------------------------- pvin_rest | 0 pwhldrwhl | 0 ptrailer | 1,091 .1072411 .5285021 0 9 pmcarr_i1 | 1,091 10.70944 25.86984 0 99 pmcarr_i2 | 0 -------------+--------------------------------------------------------- pmcarr_id | 0 pgvwr | 1,091 .4573786 1.08989 0 9 pv_config | 1,091 1.15582 7.044518 0 99 pcargtyp | 1,091 5.230981 20.79648 0 99 phaz_inv | 1,091 1.000917 .0302752 1 2 -------------+--------------------------------------------------------- phazplac | 1,091 .0018332 .0605505 0 2 phaz_id | 1,091 1.826764 60.33856 0 1993 phaz_cno | 1,091 .0027498 .0908257 0 3 phaz_rel | 1,091 .0073327 .2422019 0 8 pbus_use | 1,091 .1081577 2.979015 0 98 -------------+--------------------------------------------------------- psp_use | 1,091 .0522456 .5535722 0 7 pem_use | 1,091 .0027498 .0523901 0 1 punderide | 1,091 0 0 0 0 pimpact1 | 1,091 16.56829 24.2661 1 99 pveh_sev | 1,091 4.503208 2.284117 0 9 -------------+--------------------------------------------------------- ptowed | 1,091 3.168653 2.012568 1 9 pm_harm | 1,091 13.2209 6.428418 1 54 pveh_sc1 | 1,091 .4821265 4.398332 0 42 pveh_sc2 | 1,091 0 0 0 0 pfire | 1,091 .0183318 .1342098 0 1 -------------+--------------------------------------------------------- pdeaths | 1,091 .0412466 .2289664 0 3 by Jean Roth , jroth@nber.org , 22 Oct 2016